Holographic Glitter Effect SULKY HOLOSHIMMER is a holographic metal-effect thread that lets the embroidery design sparkle and shimmer like a diamond.The metallized film creates particularly beautiful effects for embroidery designs with wide satin stitches and a low stitch density. Ideal for decorative stitches and decorative seams.This unique thread displays stunning holographic effects. The key to SULKY HOLOSHIMMER's one-of-a-kind look is the light refraction produced from its untwisted thread surface thus this specialty embroidery thread is ideal for large-scale embroidery designs.